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CVE-2026-10221

📛 CVE Title

NousResearch hermes-agent run_agent.py _compress_context injection

⬇ Download JSON ⚠ View as Threat

Description

A vulnerability was identified in NousResearch hermes-agent up to 0.12.0. Affected by this vulnerability is the function _compress_context of the file run_agent.py. The manipulation leads to injection. It is possible to initiate the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

Overview

State
PUBLISHED
Assigner (CNA)
VulDB
CVSS severity
MEDIUM
CVSS score
CVSS 6.9 / 10 6.9 6.9 / 10
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Effective score
6.9 / 10 MEDIUM source: CNA overview
CWE(s)
CWE-74, CWE-707
Reserved
2026-05-31
Published
2026-06-01 03:45 UTC
Last updated
2026-06-03 16:10 UTC
Source
https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/10xxx/CVE-2026-10221.json
Linked Threat
CVE-2026-10221 — CVE-2026-10221

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published
2026-06-01 04:16:21 UTC
NVD last modified
2026-06-17 10:12:03 UTC
NVD CVSS v3.1
CVSS 7.3 / 10 7.3 7.3 / 10 HIGH source: cna@vuldb.com
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Exploitability subscore
3.9 / 10
Impact subscore
3.4 / 10
EPSS score
0.0030 (probability of exploitation in next 30 days)
EPSS percentile
22.18% vs all CVEs — higher = more likely to be exploited, as of 2026-07-03

NVD / KEV / EPSS data refreshed 2026-07-03 17:51 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID
EUVD-2026-33554
Assigner
VulDB
Published
Jun 1, 2026, 3:45:08 AM
Updated
Jun 3, 2026, 4:10:30 PM
EUVD base score (CVSS 4.0)
6.9 / 10
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
EUVD-reported EPSS
0.3000
Vendors
NousResearch
Products
hermes-agent (0.3)
hermes-agent (0.6)
hermes-agent (0.12.0)
hermes-agent (0.2)
hermes-agent (0.10)
hermes-agent (0.8)
hermes-agent (0.11)
hermes-agent (0.5)
hermes-agent (0.4)
hermes-agent (0.9)
hermes-agent (0.1)
hermes-agent (0.7)
Aliases
GHSA-xq8w-9jvx-gm3v

ENISA description: A vulnerability was identified in NousResearch hermes-agent up to 0.12.0. Affected by this vulnerability is the function _compress_context of the file run_agent.py. The manipulation leads to injection. It is possible to initiate the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

EUVD references (5)

Affected products (1)
VendorProductVersionsPlatforms
NousResearch hermes-agent 0.1 (affected), 0.2 (affected), 0.3 (affected), 0.4 (affected), 0.5 (affected), 0.6 (affected), 0.7 (affected), 0.8 (affected), 0.9 (affected), 0.10 (affected), 0.11 (affected), 0.12.0 (affected) —

Vendor references (5)

References embedded in the original CVE record by the assigning CNA.

Web references (8)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

NVD-tagged references (6)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

Remediations (17)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

  • Update Software, Mitigation M1051 - Enterprise | MITRE ATT&CK®
    web:attack.mitre.org

    This mitigation can be implemented through the following measures: Regular Operating System Updates Implementation: Apply the latest Windows security updates monthly using WSUS (Windows Server Update Services) or a similar patch management solution. Configure systems to check for updates automatically and schedule reboots during maintenance ...

    2026-06-08 16:01 UTC
  • Microsoft and Adobe Patch Tuesday, May 2026 Security Update Review
    web:blog.qualys.com

    May 2026's Patch Tuesday arrives with Microsoft addressing a fresh set of vulnerabilities across its ecosystem, reinforcing the ongoing need for timely patching in an increasingly threat-heavy…

    2026-06-08 16:01 UTC
  • Microsoft Patch Tuesday May 2026 - 120 Vulnerabilities Fixed, Including ...
    web:cybersecuritynews.com

    Microsoft's May 2026 Patch Tuesday lands with a heavy enterprise focus, fixing 120 vulnerabilities across Windows, Office, Azure, developer tools, and Microsoft 365 apps, including 29 remote code execution (RCE) flaws rated Critical.

    2026-06-08 16:01 UTC
  • Feedly Patch Tuesday Report—searchable, scannable, and exportable
    web:feedly.com

    The monthly event has become known as Patch Tuesday and frequently includes product fixes for over 100 flaws, including critical vulnerabilities and zero-day exploits. As a vulnerability manager or CTI analyst, you need to quickly understand the potential threats against your infrastructure and prioritize remediation activities.

    2026-06-08 16:01 UTC
  • Adobe Security Bulletin
    web:helpx.adobe.com

    Adobe has released a security update for Adobe Acrobat and Reader for Windows and macOS. This update addresses a critical vulnerability. Successful exploitation could lead to arbitrary code execution. Adobe is aware of CVE - 2026 -34621 being exploited in the wild.

    2026-06-08 16:01 UTC
  • Security Update Guide - Microsoft
    web:portal.msrc.microsoft.com

    The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.

    2026-06-08 16:01 UTC
  • May 2026 Patch Tuesday: Updates and Analysis | CrowdStrike
    web:www.crowdstrike.com

    Microsoft has released security updates for 130 vulnerabilities, including 30 critical, in its May 2026 Patch Tuesday rollout.

    2026-06-08 16:01 UTC
  • Patch Tuesday: May 2026 Latest Patch Updates & Breakdown
    web:www.manageengine.com

    Patch Tuesday is the unofficial term for Microsoft's scheduled security patch updates. Explore May 2026's Microsoft Patch Tuesday fixes, CVE IDs & more.

    2026-06-08 16:01 UTC
  • Oracle Critical Patch Update Advisory - April 2026
    web:www.oracle.com

    This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.

    2026-06-08 16:01 UTC
  • Patch Tuesday June 2026: Security Updates & CVE Analysis
    web:zecurit.com

    Get the complete breakdown of Microsoft's June 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .

    2026-06-08 16:01 UTC
  • Microsoft Confirms Defender RoguePlanet 0-Day Exploit and Working to ...
    web:cybersecuritynews.com

    Microsoft has officially acknowledged a critical zero-day vulnerability in Microsoft Defender, publicly dubbed "RoguePlanet," and confirmed it is actively developing a security patch to address the flaw.

    2026-06-19 02:31 UTC
  • 2 New Microsoft Defender Zero-Days Exploited—Patch Now Rolling Out
    web:tech.yahoo.com

    Microsoft has confirmed an emergency security update as CISA warns that two new Defender zero-days are being exploited by attackers.

    2026-06-19 02:31 UTC
  • Microsoft Patches 59 Vulnerabilities Including Six Actively Exploited ...
    web:thehackernews.com

    Microsoft patches 59 vulnerabilities, including six actively exploited zero-days, with CISA mandating urgent federal remediation .

    2026-06-19 02:31 UTC
  • Microsoft is working on a patch for 'YellowKey ... - Computerworld
    web:www.computerworld.com

    Microsoft says it is considering a patch for a zero-day vulnerability, dubbed YellowKey, that allows attackers with access to a Windows device to bypass Bitlocker encryption protection and read ...

    2026-06-19 02:31 UTC
  • Microsoft patches two zero-day flaws in Defender - CSO Online
    web:www.csoonline.com

    Microsoft released emergency fixes for two zero-day vulnerabilities in the malware protection components of Microsoft Defender. The flaws allow local attackers to gain system-level privileges or ...

    2026-06-19 02:31 UTC
  • Microsoft working on a fix for RoguePlanet, a flaw that grants full PC ...
    web:www.malwarebytes.com

    Microsoft says it's working on a fix for an unpatched Defender vulnerability that can give attackers the highest level of access on Windows.

    2026-06-19 02:31 UTC
  • Microsoft Technical Security Notifications
    web:www.microsoft.com

    Security Update Guide Notifications Microsoft's free Security Update Guide Notifications provide links to security-related software updates and notification of re-released security updates. These notifications are sent via email throughout the month as needed.

    2026-06-19 02:31 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-10221.json.

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